|Table of Contents|

Flexural behaviors of full-scale prestressed concrete hollow slab girders with composite strengthening(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2018年02期
Page:
31-41
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Flexural behaviors of full-scale prestressed concrete hollow slab girders with composite strengthening
Author(s):
WANG Shi-chao1;  WANG Chun-sheng1;  WANG Qian1;  TIAN Xiao-feng2;  DUAN Lan1
1. Shaanxi Provincial Major Laboratory for Highway Bridge and Tunnel, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Tongchuan Transport Bureau, Tongchuan 727031, Shaanxi, China
Keywords:
bridge engineering;  steel plate-concrete composite strengthening girder;  steel plate-prestressed concrete composite strengthening girder;  flexural behavior;  full-scale test
PACS:
U448.35
DOI:
-
Abstract:
The flexural behavior experiments of three full-scale prestressed concrete hollow slab beams were carried out, including unreinforced girder, steel plate-concrete composite strengthening(SPCCS)girder, and steel plate-prestressed concrete composite strengthening(SPPCCS)girder. The strain, slip, crack distribution, bearing capacity, stiffness, and ductility at the critical position of each full-scale test girder were analyzed. According to the plastic failure characteristics of test girders, the effect of secondary loading was taken into account, and the calculation formulas of ultimate flexural capacities of full-scale test beams were proposed. Test result shows that the failure modes of strengthened girders are plastic bending failure, and the deformations of mid-span cross-sections satisfy the plane cross-section assumption. The relative slips between the strengthening steel plate and the new concrete, the strengthening part and the original structure are less than 0.05 mm, all parts of test girders after strengthening can cooperatively work. Compared with the unreinforced girder, the ultimate flexural capacity of SPCCS concrete hollow slab girder increases by 1.08 times, and the value of SPPCCS concrete hollow slab girder increases by 1.43 times. Therefore, the composite strengthening can obviously improve the ultimate bearing capacity of test girder. Compared with the unreinforced girder, the ductility coefficients of 2 strengthening test girders increase by 21%, and when test load is 200 kN, the stiffnesses increase by 1.55 times and 3.07 times, respectively. Therefore, the composite strengthening can obviously improve the stiffness and ductility of test girder. Compared with SPCCS technology, SPPCCS technology can significantly improve the bearing capacity and stiffness of test girder in the service stage. For 2 strengthening test girders, the ratios of ultimate flexural capacities computed by using the proposed simplified formulas to the experimental values are 0.94 and 0.96, respectively. Therefore, the formulas can be used to accurately calculate and analyze the flexural behaviors of prestressed concrete hollow slab beams strengthened by SPCCS technology. 4 tabs, 23 figs, 28 refs.

References:

[1] 冯正霖.我国桥梁技术发展战略的思考[J].中国公路,2015(11):38-41.
FENG Zheng-lin. Thinking on the development strategy of bridge technology in China[J]. China Highway, 2015(11): 38-41.(in Chinese)
[2] 袁爱民,周元华,戴 航,等.克服典型病害的新型预应力混凝土空心板梁设计[J].重庆大学学报,2012,35(10):124-129.
YUAN Ai-min, ZHOU Yuan-hua, DAI Hang, et al. A new type of prestressed concrete hollow girder design for overcoming the typical diseases[J]. Journal of Chongqing University, 2012, 35(10): 124-129.(in Chinese)
[3] 单成林.粘贴钢板或碳纤维加固受弯构件效果对比试验研究[J].应用基础与工程科学学报,2011,19(1):36-43.
SHAN Cheng-lin. Contrast experimental effect between flexural member strengthened with bonding steel plate or CFRP[J]. Journal of Basic Science and Engineering, 2011, 19(1): 36-43.(in Chinese)
[4] 郭 彤,李爱群,姚秋来,等.钢绞线网片-聚合物砂浆加固钢筋混凝土箱梁试验[J].中国公路学报,2010,23(2):36-42.
GUO Tong, LI Ai-qun, YAO Qiu-lai, et al. Experiment on reinforced concrete box-girder strengthened by steel stranded wire mesh and polymer mortar[J]. China Journal of Highway and Transport, 2010, 23(2): 36-42.(in Chinese)
[5] 吴 刚,吴智深,魏 洋,等.预应力高强钢丝绳抗弯加固钢筋混凝土梁的理论分析[J].土木工程学报,2007,40(12):28-37.
WU Gang, WU Zhi-shen, WEI Yang,et al. Theoretical analysis of the flexural behavior of RC beams strengthened with prestressed high strength steel wire ropes[J]. China Civil Engineering Journal, 2007, 40(12): 28-37.(in Chinese)
[6] 聂建国,陶慕轩,吴丽丽,等.钢-混凝土组合结构桥梁研究新进展[J].土木工程学报,2012,45(6):110-122.
NIE Jian-guo, TAO Mu-xuan, WU Li-li, et al. Advances of research on steel-concrete composite bridges[J]. China Civil Engineering Journal, 2012, 45(6): 110-122.(in Chinese)
[7] BASKAR K, SHANMUGAM N E. Steel-concrete composite plate girders subject to combined shear and bending[J]. Journal of Constructional Steel Research, 2003, 59(4): 531-557.
[8] FRAGIACOMO M, AMADIO C, MACORINI L. Finite-element model for collapse and long-term analysis of steel-concrete composite beams[J]. Journal of Structural Engineering, 2004, 130(3): 489-497.
[9] PI Yong-lin, BRADFORD M A, UY B. Second order nonlinear inelastic analysis of composite steel-concrete members. Ⅰ: theory[J]. Journal of Structural Engineering, 2006, 132(5): 751-761.
[10] PI Yong-lin, BRADFORD M A, UY B. Second order nonlinear inelastic analysis of composite steel-concrete members. Ⅱ: applications[J]. Journal of Structural Engineering, 2006, 132(5): 762-771.
[11] FAELLA C, MARTINELLI E, NIGRO E. Steel-concrete composite beams in partial interaction: closed-form “exact” expression of the stiffness matrix and the vector of equivalent nodal forces[J]. Engineering Structures, 2010, 32(9): 2744-2754.
[12] 聂建国,赵 洁.钢板-混凝土组合加固钢筋混凝土简支梁试验研究[J].建筑结构学报,2008,29(5):50-56.
NIE Jian-guo, ZHAO Jie. Experimental study on simply supported RC beams strengthened by steel plate-concrete composite technique[J]. Journal of Building Structures, 2008, 29(5): 50-56.(in Chinese)
[13] 聂建国,赵 洁.钢板-混凝土组合抗弯加固中滑移分布分析[J].清华大学学报:自然科学版,2007,47(12):2085-2088,2094.
NIE Jian-guo, ZHAO Jie. Slip distribution analysis of steel plate-concrete composite flexural members[J]. Journal of Tsinghua University:Science and Technology, 2007, 47(12): 2085-2088, 2094.(in Chinese)
[14] 赵 洁,聂建国.钢板-混凝土组合加固钢筋混凝土梁的非线性有限元分析[J].计算力学学报,2009,26(6):906-912.
ZHAO Jie, NIE Jian-guo. Nonlinear finite element analysis of RC beams strengthened using steel plate-concrete composite technique[J]. Chinese Journal of Computational Mechanics, 2009, 26(6): 906-912.(in Chinese)
[15] 聂建国,赵 洁,唐 亮.钢板-混凝土组合在钢筋混凝土梁加固中的应用[J].桥梁建设,2007(3):76-79.
NIE Jian-guo, ZHAO Jie, TANG Liang. Application of steel plate and concrete composite to strengthening of reinforced concrete girder[J]. Bridge Construction, 2007(3): 76-79.(in Chinese)
[16] 聂建国,王宇航.钢板-混凝土组合受弯加固梁疲劳性能试验研究[J].建筑结构学报,2011,32(2):1-9.
NIE Jian-guo, WANG Yu-hang. Experimental research on fatigue behavior of RC beams strengthened by steel plate-concrete composite technique[J]. Journal of Building Structures, 2011, 32(2): 1-9.(in Chinese)
[17] 王春生,高 珊,任腾先,等.钢板-凝土组合加固带损伤钢筋混凝土T梁的抗弯性能试验[J].建筑科学与工程学报,2010,27(3):94-101.
WANG Chun-sheng, GAO Shan, REN Teng-xian, et al. Bending behavior experiment of damaged RC T-beams with steel plate and concrete composite strengthening[J]. Journal of Architecture and Civil Engineering, 2010, 27(3): 94-101.(in Chinese)
[18] 王春生,袁卓亚,高 珊,等.钢板-混凝土组合加固矩形梁的抗弯性能试验[J].中国公路学报,2011,24(5):65-73.
WANG Chun-sheng, YUAN Zhuo-ya, GAO Shan, et al. Flexural behavior test of rectangular reinforced concrete beams of steel plate-concrete composite strengthening[J]. China Journal of Highway and Transport, 2011, 24(5): 65-73.(in Chinese)
[19] 王春生,袁卓亚,郭晓宇,等.钢板-混凝土组合加固混凝土T梁的抗弯性能试验[J].交通运输工程学报,2010,10(6):21-29.
WANG Chun-sheng, YUAN Zhuo-ya, GUO Xiao-yu, et al. Flexural behavior experiment of reinforced concrete T-beams with steel plate-concrete composite strengthening[J]. Journal of Traffic and Transportation Engineering, 2010, 10(6): 21-29.(in Chinese)
[20] 冯林军.钢板-混凝土组合加固试验与实桥应用研究[D].西安:长安大学,2011.
FENG Lin-jun. Experimental investigation and study on the bridges strengthened using steel plate and concrete composite strengthening technique[D]. Xi'an: Chang'an University, 2011.(in Chinese)
[21] WANG Chun-sheng, WANG Qian, LIU Hao, et al. Study on shear resistance of full-scale PC box girder reinforced by SPCCS method[C]∥TORERO J L, TENG Jin-guang, FERNANDO D. 2th International Conference on Performance-based and Life-cycle Structural Engineering. Brisbane: The University of Queensland, 2015: 512-521.
[22] WANG Qian, LI Rui, LUO Qiao, et al. Study on full-scale bending experiment of concrete girder reinforced by steel plate and concrete composite strengthening method[C]∥IABSE. IABSE Conference Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges. Zürich: IABSE, 2015: 1-8.
[23] DUAN Lan, GUO Yun-fei, WEN Yi-ping, et al. Shear Behaviour experimental study for full-scale PC box girder strengthened by composite strengthening method[C]∥IABSE. IABSE Conference Guangzhou 2016: Bridges and Structures Sustainability-Seeking Intelligent Solutions. Zürich: IABSE, 2016: 98-105.
[24] 方 志,汪建群,何 鑫,等.预应力混凝土简支箱梁受力性能足尺模型试验[J].中国公路学报,2011,24(6):49-56.
FANG Zhi,WANG Jian-qun, HE Xin, et al. Full-scale model test of loading behavior of prestressed concrete simply supported box girder[J]. China Journal of Highway and Transport, 2011, 24(6): 49-56.(in Chinese)
[25] HARRIES K A. Structural testing of prestressed concrete girders from the lake view drive bridge[J]. Journal of Bridge Engineering, 2009, 14(2): 78-92.
[26] ZHANG Jian-ren, LI Chuang-xi, XU Fei-hong, et al. Test and analysis for ultimate load-carrying capacity of existing reinforced concrete arch ribs[J]. Journal of Bridge Engineering, 2007, 12(1): 4-12.
[27] 张建仁,彭 晖,张克波,等.锈蚀钢筋混凝土旧桥超限及极限荷载作用的现场破坏性试验研究[J].工程力学,2009,26(增Ⅱ):213-223.
ZHANG Jian-ren, PENG Hui, ZHANG Ke-bo, et al. Test study on overload and ultimate behavior of old reinforced concrete bridge through destructive test of corroded bridge[J]. Engineering Mechanics, 2009, 26(SⅡ): 213-223.(in Chinese)
[28] 钱永久,滕蕴珊,朱延明.极限荷载作用下铁路钢筋混凝土旧桥的受力行为试验研究[J].西南交通大学学报,1994,29(4):423-428.
QIAN Yong-jiu, TENG Yun-shan, ZHU Yan-ming. Experimental research on flexural behavior of a deteriorated RC bridge under ultimate loading[J]. Journal of Southwest Jiaotong University, 1994, 29(4): 423-428.(in Chinese)

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Last Update: 2018-05-20